We have a Glock Talk special for you guys. A Glock 21 threaded barrel, a 45 ACP compensator, and a thread protector for $179.95 shipping included. These are not on the website so you will have to give us a call at 208-448-0600 to order one.
For an additional $50 (for reaming) and the purchase of a 24lb recoil spring this kit is great for the 460 Rowland conversion.

*We are selling barrel, compensator, and thread protector as matched parts and we do not guarantee fitment of other accessories on this barrel, or the fitment of these accessories on other barrels